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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br />. Client: EMCON Associates Date Received: 05112'93 <br /> Project: Teichert ConstructiomOF90-002.03 Service Request No.: SJ93-0655 <br /> Sample Matrix: Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 503018020/California DHS LUFT Method <br /> ug/L (ppb) <br /> Sample Name: MW-10 MW-11 MW-12 <br /> Date Analyzed: 05120/93 05/20/93 05/20193 <br /> Analyte MRL <br /> Benzene 0.5 <6. - <2. ND <br /> MToluene 0.5 <0.6 ' ND ND <br /> Ethylbenzene 0.5 ND ND ND <br /> Total Xylenes 0.5 ND ND ND <br /> TPH as Gasoline 50 240. 54. ND <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> ND None Detected at or above the method reporting limit <br /> Raised MRL due to matrix interference. <br /> Approved by: ; . LZL Date: 7- <br /> 2 <br /> 2 <br /> 1921 Ringwood Avenue m San Jose, California 95131 6 Telephone 4081407.2400 a Fox 408/437-9356 <br />